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首页> 外文期刊>Journal of Spacecraft and Rockets >Simulations of Boundary-Layer Response to Laser-Generated Disturbances at Mach 6
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Simulations of Boundary-Layer Response to Laser-Generated Disturbances at Mach 6

机译：边界层对6马赫激光产生扰动的响应模拟

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摘要

A finite volume Navier-Stokes code was used to simulate the interaction of a laser-induced disturbance with a conical boundary layer at Mach 5.85. The simulations start 0.2 μs after an optically induced breakdown that generates an initial disturbance. The initial disturbance was determined from Taylor's intense explosion similarity law and this disturbance is imposed into the flowfield of a 7 deg half-angle cone. The initial disturbance parameters, such as energy, were obtained from comparisons to experimental data. The disturbance was imposed some distance above the model and the boundary layer, so that mainly the propagating shock wave interacts with the boundary layer. This interaction results in the formation of a second-mode wave packet, and its generation and development are described. Also, comparisons to experimental data and to results of the linear stability theory are given. Furthermore, some disturbance parameters were varied, such as released energy or the number of laser pulses.
机译：有限体积的Navier-Stokes码用于模拟5.85马赫时激光干扰与圆锥形边界层的相互作用。在产生初始干扰的光致击穿之后，仿真开始0.2μs。初始扰动是根据泰勒的强烈爆炸相似定律确定的，并且此扰动被强加到7度半角锥的流场中。初始干扰参数（例如能量）是通过与实验数据进行比较而获得的。扰动被施加在模型和边界层上方一定距离处，因此主要是传播的冲击波与边界层相互作用。这种相互作用导致形成第二模式波包，并描述了它的产生和发展。此外，与实验数据和线性稳定性理论的结果进行了比较。此外，某些干扰参数也有所变化，例如释放的能量或激光脉冲的数量。

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  • 来源
    《Journal of Spacecraft and Rockets》 |2013年第2期|305-316|共12页
  • 作者

    Dirk Heitmann; Rolf Radespiel;

  • 作者单位

    Technische Universitdt Braunschweig, 38106 Braunschweig, Germany;

    Technische Universitdt Braunschweig, 38106 Braunschweig, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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